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(No Model.) 2 Sheetsr-Sheet 1.

M. v. B. STEINMETZ. MAGHINE FOR MAKING PAVING AND BUILDING BLOGKS FROM SLAG.

No.360,785. PatentedApr.5,1 88'7 g i E Kzfwaaea Ma/. 0% 0d N. PEYERS. Phumutho m hen Washington. 0.1:.

2' Z m E M N I E T S R M (No Model.)

MACHINE FDR MAKING PAVING AND BUILDING BLOCKS PROM 'SLAG. .No; 360.785.

Patented Apr. 5, 1887.

UNITED STATES PATENT OFFICE.

MARTIN VAN BU'REN STEINMETZ, OF NEWV YORK, N. Y., ASSIGNOR TO THE PERFECT BLOCK PAVEMENT COMPANY, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 360,785, dated April 5, 1887.

Application filed March 11, 1886. Serial No. 194,817. (No model.)

I had to the accompanying drawings, forming part of the same.

This invention relates to improvements in machines for making blocks for paving, building, and other similar purposes; and it has for its objects to provide for automatically molding and pressing furnace-slag into molds, and packing the blocks formed in the annealingkilns in such manner as to dispense with movable kilns and other cumbersome machinery, as more fully hereinafter specified. These ob? jects I attain by the means illustrated in the accompanying drawings, in which Figure 1 represents a view, partly in plan and partly in horizontal section, of a portion of my improved machine, showing the endless chain or series of molds in which the blocks are formed. Fig. 2 represents a side elevation of the machine and a vertical sectional view of one of the annealing-kilns. Fig. 3 represents an enlarged longitudinal vertical sectional view of the machine. Fig. 4 represents a top view thereof. Fig. 5 represents an end view of themachine.

The letter F indicates an endless chain, composed of a series of links or sections pivoted to and connected by transverse axles or shafts, upon which are mounted the flanged wheels f f f. The said chain is arranged to travel over the polygonal drums H K and carry the molds, which are fastened to the respective links, forward under the feed devices and pressing mechanism, as more fully hereinafter explained.

The drum H is provided with the projec tions 7c, which engage the shafts of the wheels ff f and carry the belt forward. The drum H is mounted on an axle or shaft, It, which is journaled or supported between the arms of the bracket L, which is mounted upon a cylindrical standard, G, rigidly secured between the stanchions M in such manner as to turn partially and be capable of a vertical movement thereon, being confined in any desired position by means of the set-screw, for the purpose hereinafter explained. The stanchions M are fastened to a suitable base, which is rigidly secured to the ground.

Thedrum K is mounted upon ashaft or axle, h, which is journaled in bearings on the parallel beams 12, secured to the stanchions M, which are fastened to a base, T, mounted on wheels .5, arranged to travel upon a track, m, laid in front of the annealing-kilns P 1? P, so that the end of the machine may be shifted and brought to any particular kiln, as may be desired. The stanchions M are strengthened by braces 15 15, connected with the base T, in order to withstand the strain of the machinery.

The molds are provided with covers or lids d, which are hinged to the edge at one side of the same, the said lids being of substantial weight, so that they will drop by their own gravity and open the molds to discharge the blocks at the proper time, as more fullyhereinafter explained.

Connected with the axles h h are two parallel tracks, over which the wheels f f f 2 travel, so as to-support the molds under pressure and the weight of the slag, and to prevent the chain from sagging or becoming injured. The lids of the molds are provided with arms d at one side, which are brought in contact with a cam-plate, b, secured to one of the rails and to the axle h at one side of the machine. As the belt travels thereby, the covers are elevated automatically to permit the molds to be charged.

The letter a indicates a roller, mounted on an axle, a, journaled between the standards a", secured to the rail. The said roller serves to throw down the lids of the molds as they are carried forward, and press them successively on the blocks, so as to compress and compact the same and force out the gas previous to their discharge from the molds.

The kilns P P P are constructed in benches of any convenient number, side by side and in tiers one above-the other, if desired, and they are preferably made of cast-iron or some other equally good conductor of heat, so that they may receive the heat from the blocks and communicate it from one to another during the annealing process, and thus preserve a sufficient and uniform temperature throughout the whole without other heating apparatus. The

said kilns are provided with suitable doors at the front and rear, which are made as nearly air-tight as possible and provided with apertures c, which may be opened or closed to regu- 5 late the temperature of the kilns.

The operation of my invention is as follows: XVhen it is desired to fill any particular kilnsay the lower end kiln, Pstanchions M are brought opposite it, the door opened, and an inclined slide, m, suitably supported, is extended from the end of the machine below the endless chain into the oven. The slag is then run into the open molds in front of the roller a, the belt having been put in motiomthe said molds being filled while moving. hen the lids come in contact with the roller a, they are thrown down so as to cover the molds, and as they pass under the roller they are pressed down upon the slag thereby, so as to compress it in the mold and force out all of the gas. In passing to the drum K the slag in the molds becomes cooled on the outside, so as to hold the block together, and as the molds pass over the said drum the lids open by their own weight and permit the blocks to drop out onto the slide, by which they are conveyed to the kiln. The molds on their return over the wheel 11 have their covers or lids raised by the arms (1', which ride up over the cam b for 0 the purpose.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. The combination, with the endless chain,

5 the molds, and actuating mechanism, of' the lids hinged to said molds and the roller, wherer by the lids are thrown down and pressed upon the molds, substantially as specified.

2. The combination, with the endless chain,

the molds, and actuating mechanism, of the 0 hinged covers or lids and their arms, and the cam-plate whereby said arms are operated to raise the lids, substantially as specified.

The combination, in a machine for molding slag, of the drums carrying an endless chain having a series of molds secured to the respective links, the hinged covers secured to said molds and provided with arms at one side, the roller whereby thelids are compressed upon the molds, and the cam arranged to engage the arms and raise the covers or lids for filling, substantially as specified.

4. The combination, with the endless belt and its supporting-drums and truck, of the movable bracket secured to a vertical standard and capable of moving. pivotally and vertically upon the same, whereby the machine may be adjusted to charge the diiterent annealing-kilns, substantially as specified.

5. The combination, with the endless chain, its supporting-drums and truck, otthe stanchions between which the forward drum isjournaled,the said stanchions being mounted on a movable base provided with wheels and arranged to move upon a track in front of the 65 annealing-kilns, substantially as specified.

6. The combination of the endless belt, the supporting-drums, the pivoted bracket and its standard, and the stanchions secured to a movable base arranged to travel upon a suitable track, whereby the machine may be adjusted to discharge the blocks into a particular kiln, substantially as specified.

\Vitnesses: V

NATHAN LEVENSON, (nus. R. CLARKE. 

